Increasing the reliability of an estimation of a current psycho-emotional state of the person at the analysis of its face vibraimage in conditions of illumination unevenness and instability

Abstract

The approach allowing to increase reliability of the person current psychoemotional state estimation results at the analysis of its image vibration components (VC) is offered. The essence of the proposed approach is to spatially-temporally compensate the person’s face VC image distortion caused by unevenness or temporal instability of illumination. It is proposed to use correction of pixel brightness values to compensate for distortions caused by temporal instability of illumination. Such correction is carried out in proportion to the magnitude of the excess of the light level of its mean value at a given time. To compensate for distortions caused by spatial heterogeneity of illumination, it is proposed to use a linear two-dimensional model for correcting the brightness of the image frame pixels in accordance with the measured brightness values at the reference points. Implementation of the approach is most expedient for human factor management, as well as in conducting training and testing sessions.